Applicability of alkali-activated cement for immobilization of low-level radioactive waste in ion-exchange resins

Authors

  • Pavlo Kryvenko Kyiv National University of construction and architecture 37 Povitroflotskii ave., Kyiv, Ukraine, 03037, Ukraine https://orcid.org/0000-0001-7697-2437
  • Cao Hailin Advanced materials Research Institute The Tenth Kejinan Road, High-tech Zone, Nanshan District, Shenzhen, PR. China, 518057, China
  • Oleg Petropavlovskyi Kyiv national university of construction and architecture 37 Povitroflotskii ave., Kyiv, Ukraine, 03037, Ukraine https://orcid.org/0000-0002-3381-1411
  • Luqian Weng Advanced materials Research Institute The Tenth Kejinan Road, High-tech Zone, Nanshan District, Shenzhen, PR. China, 518057, China
  • Oleksandr Kovalchuk Kyiv national university of construction and architecture 37 Povitroflotskii ave., Kyiv, Ukraine, 03037, Ukraine

DOI:

https://doi.org/10.15587/1729-4061.2016.59489

Keywords:

alkali-activated cements, geopolymers, immobilization, low-level radioactive waste

Abstract

All generated and collected low-level radioactive wastes (LRW) should be processed into final products for a long-term disposal without loss of their properties. Worldwide, cementation is the most widely used technology for immobilization of nuclear wastes. Due to many existing varieties of LRW some of these wastes are incompatible with the process of hydration and hardening of a cement matrix and require optimization of cement immobilization technologies. The paper presents the results of devising new formulations of multi-component alkali-activated cement, which is aimed at complex processing of low-level radioactive waste with ion-exchange resins. The radioactive wastes to be immobilized included two types of ion-exchange resins: cation- and anion-exchange resins mixed as 2:1 with pH=12 and anion-exchange resin with pH=5. Analysis of the obtained results from the developed optimal recipes proved that the properties of the final products are in compliance and in some cases even exceed those set in standards GB 7023 and GB 14569 of the P. R. China. High efficiency of the alkali-activated cement matrices for immobilization of radioactive wastes is attributed to their ability to bind radionuclides not only mechanically and adsorptionally, as it happens in case of traditional cement matrices, but also chemically–within the composition of zeolite-like hydration products of the R2O∙MeO∙Al2O3∙nSiO2mH2O or R2O∙Al2O3∙nSiO2mH2O types, where: R=Na, K, and Cs; Me=Ca, Mg, and Sr.

Author Biographies

Pavlo Kryvenko, Kyiv National University of construction and architecture 37 Povitroflotskii ave., Kyiv, Ukraine, 03037

Doctor of Technical Science, Professor

V. D. Glukhovskii Scientific research institute for binders and materials

Cao Hailin, Advanced materials Research Institute The Tenth Kejinan Road, High-tech Zone, Nanshan District, Shenzhen, PR. China, 518057

PhD, Professor

Shenzhen Academy of Aerospace Technology

Oleg Petropavlovskyi, Kyiv national university of construction and architecture 37 Povitroflotskii ave., Kyiv, Ukraine, 03037

PhD, Senior researcher

V. D. Glukhovskii Scientific research institute for binders and materials

Luqian Weng, Advanced materials Research Institute The Tenth Kejinan Road, High-tech Zone, Nanshan District, Shenzhen, PR. China, 518057

PhD, Professor

Shenzhen Academy of Aerospace Technology

Oleksandr Kovalchuk, Kyiv national university of construction and architecture 37 Povitroflotskii ave., Kyiv, Ukraine, 03037

PhD, Senior researcher

V. D. Glukhovskii Scientific research institute for binders and materials

References

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Published

2016-02-21

How to Cite

Kryvenko, P., Hailin, C., Petropavlovskyi, O., Weng, L., & Kovalchuk, O. (2016). Applicability of alkali-activated cement for immobilization of low-level radioactive waste in ion-exchange resins. Eastern-European Journal of Enterprise Technologies, 1(6(79), 40–45. https://doi.org/10.15587/1729-4061.2016.59489

Issue

Vol. 1 No. 6(79) (2016): Technology organic and inorganic substances

Section

Technology organic and inorganic substances

License

Copyright (c) 2016 Pavlo Krivenko, Cao Hailin, Oleg Petropavlovskyi, Luqian Weng, Oleksandr Kovalchuk

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